今天在使用spring boot+spring-data-redis 做缓存,在获取缓存的时候出现了: java.lang.ClassCastException: com.xxx.www.xxx.entity.Sign cannot be cast to com.xxx.www.xxx.entity.Sign 的异常,记录一下解决思路以及方案。 首先,出现这个问题,因为类的全名和路径都一样,那么根据java判断两个类是否是同一个类...
java.lang.ClassCastException:异常 A cannot be cast to A 这样的错误,这里找了半天错误, 实在是找不出来, 之前怀疑是 类加载器的问题, 但是本人小白一个,对类加载器 不是很了解··· 这个问题一直得不到解决 后来在网上看到可能是 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>...
同一个类如果使用了不同的类加载器,就会产生这样的错误,所以解决方案就是让通用Mapper和实体类使用相同的类加载器即可。 DevTools 默认会对 IDE 中引入的所有项目使用 restart 类加载器,对于引入的 jar 包使用 base 类加载器,因此只要保证通用Mapper的jar包使用 restart 类加载器即可。 在src/main/resources 中创建...
*@return缓存键值对应的数据*/public<T> T getCacheObject(finalString key) { ValueOperations<String, T> operation =redisTemplate.opsForValue();returnoperation.get(key); } 但是会报错com.alibaba.fastjson.JSONObject cannot be cast to xxx 解决方案:将得到的对象toString,再通过JSON.parseObject转成对应的对...
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Hello everybody, i went through this turotial twice and i think i got everything right the thing is that i changed it up a little bit to add a column to the table to fit it into my situation to build an transactionsapp. is someone facing...
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Flink报错java.lang.ClassCastException: org.codehaus.janino.CompilerFactory cannot be cast to org.codehaus.commons.compiler.ICompilerFactory 参考答案: 本质原因是用户的jar包中,也引入了跟我们冲突的janino依赖。分析下用户jar里面是否有org.codehaus.janino.CompilerFactory。由于在不同机器上的class加载顺序不一样,...